AAT3220
150mA NanoPower™ LDO Linear Regulator
™
PowerLinear
General Description
Features
The AAT3220 PowerLinear NanoPower low
dropout (LDO) linear regulator is ideal for portable
applications where extended battery life is critical.
This device features extremely low quiescent cur-
rent, typically 1.1µA. Dropout voltage is also very
low, typically less than 225mV at the maximum out-
put current of 150mA. The AAT3220 has output
short-circuit and over-current protection. In addi-
tion, the device also has an over-temperature pro-
tection circuit which will shut down the LDO regu-
lator during extended over-current events.
•
•
•
•
•
1.1µA Quiescent Current
Low Dropout: 200mV (typ)
Guaranteed 150mA Output
High Accuracy: ±2.0%
Current Limit and Over-Temperature
Protection
Low Temperature Coefficient
Factory-Programmed Output Voltages:
1.8V to 3.5V
Stable Operation With Virtually Any Output
Capacitor Type
•
•
•
•
•
3-Pin SOT-89 or SC59 Package
4kV ESD Rating
The AAT3220 is available in a Pb-free, space-saving
SC59 package, or a Pb-free SOT-89 package for
applications requiring increased power dissipation.
The device is rated over the -40°C to +85°C tem-
perature range. Since only a small, 1µF ceramic
output capacitor is required, often the only space
used is that occupied by the AAT3220 itself. The
AAT3220 is truly a compact and cost-effective volt-
age conversion solution.
Applications
•
•
•
•
•
•
•
Cellular Phones
Digital Cameras
Handheld Electronics
Notebook Computers
PDAs
Portable Communication Devices
Remote Controls
The AAT3221/2 is a similar product for this appli-
cation, especially when a shutdown mode is
required for further power savings.
Typical Application
INPUT
OUTPUT
IN
OUT
AAT3220
GND
GND
GND
3220.2006.01.1.4
1